books.google.co.uk - This is the great American pot story, a dramatic social exploration of a plant that sits at the nexus of political, legal, medical, and scientific discourse. From its ancient origins, to its cutting-edge therapeutic benefits, to its role in a culture war that has never ceased, marijuana has evolved beyond...http://books.google.co.uk/books/about/Smoke_Signals.html?id=8XE-AAAAQBAJ&utm_source=gb-gplus-shareSmoke Signals